Stone-sawing machine.



No. 841,300'.- PATENTED JAN. l5, 1907.

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No. 841,300. PATNNTED JAN. 15, .1907.'

J. s. YOUNG.

STONE sAWi-NG MACHINE.

APPLICATION FILED MAR.30, 1906.

3 SHEETS-SHEET 2.

INVENTOR TH: Namels PETERS co., WASHINGTON, n. c.

No. 841 300. A PATENTED J J' Si YOUNG' AN 15, 1907.

STONE SAWING MACHINE. l -APPLIOATIQN FILED 11111.30. woe.

3 SHEETS-SHEET 3.

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UNITED; STATES JAMES SYLVESTER YOUNG,

OF NORTHFIELD, VERMONT.

STONEMSAWING MACHINE.

Speccation of Letters Patent.

Patented Jan. 15,1907.

Application filed March 30, 1906. Serial-No. 308,986.

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Be it known that I, JAMES SYLvns'rER YOUNG, residing at present in Northlield, in the county of I/Vashington and State of Vermont, have invented certain new and useful Improvements in Stone-Sawing Machines, of which the following is a specification.

My invention relates to certain new and useful improvements in stone-sawing machines in which means are provided for mounting the saw-carrying frame so as to be reciprocable in a horizontal plane and so mounted as to eliminate as much frictionas possible, and thereby to reduce the power necessary to operate the machine.

My invention also includes a new and useful construction of saw-carrying frame and saw-blades, includingl means for renforcing the blade centrally to prevent the same from rising up in the center when the blades are in operation. Y

With other objects in view than have been heretofore specified the invention comprises certain novel construction, combination, and arrangement of parts, all of which will 'be first fully described, then specifically pointed out in the appended claims, and illustrated in the accompanying drawings, in which- Figure 1 is a perspective view of my invention. Fig. 2 is a top plan view thereof. Fig. 3 is a longitudinal section on the line 3 3 of Fig. 2. Fig. 4 is a transverse section on theline 4 1 of Fig. 2. Fig. 5 is a perspective view of the saw-blade-carrying frame detached from the supporting-frame. Fig. 6 is a detail perspective view of one saw-blade. Fig. 7 is a detail sectional view on the line 7 7 of Fig. 6. Fig. 8 is a detail perspective view of the reinforcing bridge member. Fig. 9 is a detail view of one of the blade-clamps coperating with the bridge member. Fig. 10 is a similar view of a slightly-modified form of blade-clamp. Fig. 11 is a detail view showing a slightly-modiiied way of connecting the crossed hanger-bars to the saw-beam.

Referring to the accompanying drawings, in which like numerals of reference indicate like parts in all of the figures, 1 designates the main supporting-frame of the machine, which comprises the top rectangular frame la, the bottom rectangular frame 1b, and corner-posts 10, as shown.

2 designates the supplemental Vposts hav ing a dovetailed groove 2, running their entire length, which posts 2 are similarly disposed between the corner-posts 1C on each side of the machine. Slidablymountedin the grooves 2a ofthe posts 2 lare .blocks lf3, having lugs 3a upon which walking'beamsor arms 4 are pivoted. Each block 3 .fis vertically adjustably held-in its respective groove 2a-by screws 5,each of whichpassesthrough 'a'vthreaded aperture 3b infeach blockv, .and the screws 5 also serve to adjustga second block 6 in harmonywith the block 3, which block` is likewise movablein theggroovesQa and carries guide-rollers 7 for guiding the saw-frame.

An arc-bar 8 is connected with-fthewalkingbeam 4, thatis pivoted'on-the lug 5a-of .the block 3, the connection being made by crossed arms or hanergsllO 1 1.

The arm '10 has anelongatedf-slottopermit passage of the arm 11 for apurpose readily understood.

The side bars 12a lof lthe lsaw-carrying frame are pivotally secured-to the yarc-barsiS, as. at 13a, byhangers-13.

In order to properly adjust ,all of fthe blocks 3 and -simultaneously, Imayprovide the screws 5 with pinions 5, whichgmesh with similar pinions 14a on..shafts14,mount ed in bearings on the supporting -.frame. These shafts are preferably simultaneously operable `through the medium ,of a crossshaft 15, having gears 15D in mesh .Withgears letb on the shafts 14, as clearly .shownin Figs. 1 and 2 of the drawings. Theshaftl may be operated by a crank 15a orother suitable means.

The saw-carrying frame 12 may be reciprocated in any approved Imanner, as the means for reciprocating the frame per jse forms no part of my presentinvention. `By reason of the manner in which the frame l112 is suspended from the supportingfframedt is capable of reciprocating (Within r` 3c1i'1a-i-n limits) in practically a horizontal plane/,at-.all times, thus insuring properoperation-ofthe saws without undue friction in the ymoving parts of the machine. Y`

The -saw-carrying frame 12 vcomprisesFthe `side bars .12a and theend bars 12b, which bars12b are slotted, as at 12?, yt0,permitfpassage of the take-up rods 16a` of the saw-holders 16. The -holders l-arefsecured tothe bars 12b bynuts 16b,threaded onf-thefrodl-, and they are` secured tothe saw-'bladesfZOfby bolts 17 or otherwise, as might be found-.convenient.

The saws l20, vwhich' also4 forma partf -offnfiy present invention, each, comprise a `Yskeleton IlO body formed by the upper and lower bars or strips 20ZL 20h, respectively, joined together by the tie-blade strips 20, that are spaced apart at suitable intervals to leave apertures 20dl through the body of the blade.

The strips 20a and 20b have grooves 20e to receive the strips 20", which where theyjoin the strips 20EL are also cut away, as at 205', so that the strips 20a 20b have, as it Were, a mortise-and-tenon joint with the strips 20. The several stri s 20a 2Gb 20c may be secured together by bollts or rivets, as may be found desirable.

The lower bar or strip 20b between the strips 20e is provided with dovetailed recesses 20r in its lower edge to receive the saw-teeth 21 and their locking-wedges 22, which teeth and wedges 21 22, res ectively, may be of any approved type, pre erably that shown in my Patents No. 816,769, dated April 3, 1906, and No. 816,768, dated April 3,1906.

Suitable molding-planes 23 may be secured between the teeth 21 by rivets or bolts to the strip or bar 20h.

When the teeth 21 of the type disclosed in my applications hereinbefore referred to are used, as the teeth wear down they can be readily removed and replaced by new teeth or the worn teeth can be cut to a less width With the side groove deepened and be inserted again into the tooth-receiving recesses and held in place by larger wedges 22, and

- thus made to serve their functions during a longer period until they are too worn to stay in the recesses of the blade. v Several blades spaced at suitable intervals a art are used in my machine, all being later-` a ly adjustably carried by the saw-frame 12, as indicated` 25 designates a bridge member, of which one or more may be used, and the bridge member comprises apair of parallel bars 25a, spaced apart by one or more blocks 25h, to which the bars 251L are secured by bolts 25c or otherwise, thus forming slots 251 between the bars 25a. Inthe slots 25d saw-clamps 26 are, adjustably held, and each clamp 26 comprises a head 26EL and a shank 26h, that passes through the slot 25d and is secured 'in place by a nut 27, threaded on the shank, as shown in Figs. 1 and 8 of the drawings, or the clamps 26 may be held in place by a wedge 28, passing through an aperture 26d in the shank 26h, as indicated in Fig. 10. Each clamp 26 has its head 26a slotted, as at 26, to straddle the upper edge of the sawblade and hold the blade from movement andy reinforce the same.

The bridge 25 is secured to the frame 12 at the desired places by substantially Leshaped irons 29, that are held in place by nuts 30 and 31 on their respective threaded ends 29a 29h.

Instead of using a saw-blade formed of sections in a skeleton frame, as indicated herein, in connection with my reciprocating frame I may use the type of blade'fdisclosed by my copending app ications hereinbefore referred to.

From the foregoing description, taken in connection with the accompanying drawings, it is thought the complete construction, operation, and numerous advantages of my invention will be readily understood by those skilled in the art to which it appertains.

1. In a stone-saw machine, the combination with a main supporting-frame and a saw-carrying frame, of a plurality of means for suspending said saw-carrying frame from said main supporting-frame to be reciprocable in a horizontal plane, said suspending means each comprising a block vertically adjust ably held by said main suppp orting-frame a walking-beam pivotally secured to said block, a pair of crossed hangers pivotally secured lto said walking-beam, an arc-bar pivotally secured to said crossed bars, means o connecting said arc-bars with said saw-carrying frame, supplemental blocks carrying friction-rollers for cooperating withl the sawcarrying frame and arc-bars, and a plurality of sets of means foradjusting said iirst-mentioned blocks and said last-mentioned blocks in pairs, substantially as shown and described.

2. In a stone-saw machine, the combination with a main supporting-frame and a saw-carrying frame of a plurality of means for suspending said saw-carrying frame, from said main supporting-frame to be reciprocable in a horizontal plane, said suspending means each comprising a block vertically adjustably held by said main supporting-frame, a walking-beam pivotally secured to said block, a pair of crossed hangers pivotally secured to said walking-beam, an arc-bar pivotally secured to said saw-carrying frame, supplemental blocks carrying friction-rollers for cooperating with the saw-carryin frame and arc-bars, and a plurality of sets of means for adjusting said first-mentioned blocks and said last-mentioned blocks in pairs, and means for simultaneously operating all of said adjusting means, substantially as shown and described.

3. In a stone-saw, a main supportingframe, grooved standards forming a part of IOC lIO

Said frame, pairs 0f blocks vertically, adjust said frame, pairs of blocks vertically adjustably held in said grooved standards and spaced apart, means ooperatively connecting said blocks together for adjusting the blocks in pairs, a saw-carrying frame, Walking-beams pivotally supported on the upper blocks, crossed hangers pivotally secured to each Walking-beam, an are-plate secured to said cross-hangers, and to the saw-frame,

friction-rollers on the lower blocks for eop- 1o erating With such aro-bars, and means ooperatively connecting each of said block-adjusting means to operate the same in unison substantially as shown and described.

JAMES SYLVESTER YOUNG. Witnesses:

REUBEN J. WHITOOMB, L. W. KINNEY. 

